Type (tag)

type=<type> is how to distinguish between photos, paintings, engravings and other types of image.

Here are some common values:

type=photo
type=painting
type=drawing
type=engraving
type=lithograph
type=map — if the image is a map, use this whatever the means of reproduction
type=plan — if the image is a plan, use this whatever the means of reproduction
type=section — if the image is a section, use this whatever the means of reproduction